A portrait of the extreme solar system object 2012 DR30
Article
Article Title | A portrait of the extreme solar system object 2012 DR30 |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Kiss, Cs. (Author), Szabo, Gy. (Author), Horner, J. (Author), Conn, B. C. (Author), Muller, T. G. (Author), Vilenius, E. (Author), Sarneczky, K. (Author), Kiss, L. L. (Author), Bannister, M. (Author), Bayliss, D. (Author), Pal, A. (Author), Gobi, S. (Author), Verebelyi, E. (Author), Lellouch, E. (Author), Santos-Sanz, P. (Author), Ortiz, J. L. (Author), Duffard, R. (Author) and Morales, N. (Author) |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 555, p. A3 |
Number of Pages | 13 |
Year | 2013 |
Publisher | EDP Sciences |
Place of Publication | Les Ulis, France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/201321147 |
Abstract | 2012 DR30 is a recently discovered solar system object on a unique orbit, with a high eccentricity of 0.9867, a perihelion distance of 14.54 AU, and a semi-major axis of 1109 AU, in this respect outscoring the vast majority of trans-Neptunian objects (TNOs). We performed Herschel/PACS and optical photometry to uncover the sizeand albedo of 2012 DR30, together with its thermal and surface properties. The body is 185 km in diameter and has a relatively low V-band geometric albedo of ∼8%. Although the colours of the object indicate that 2012 DR30 is an RI taxonomy class TNO or Centaur, we detected an absorption feature in the Z-band that is uncommon among these bodies. A dynamical analysis of the target's orbit shows that 2012 DR30 moves on a relatively unstable orbit and was most likely only recently placed on its current orbit from the most distant and still highly unexplored regions of the solar system. If categorised on dynamical grounds 2012 DR30 is the largest Damocloid and/or high inclination Centaur observed so far. |
Keywords | Kuiper belt objects; 2012 DR30; dynamical analysis |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
510204. Photonics, optoelectronics and optical communications | |
519999. Other physical sciences not elsewhere classified | |
Public Notes | © 2013 ESO. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Konkoly Observatory, Hungary |
University of New South Wales | |
Max Planck Society, Germany | |
Australian National University | |
Paris Observatory, France | |
Institute of Astrophysics of Andalusia, Spain |
https://research.usq.edu.au/item/q2815/a-portrait-of-the-extreme-solar-system-object-2012-dr30
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